Pressure switch system based on high-molecular elastic material and control method thereof

Abstract

The invention discloses a high-molecular elastic material-based pressure switch system and a control method thereof. The pressure switch system comprises a high-molecular elastic material shell and a pressure switch module packaged in the high-molecular elastic material shell. The pressure switch module comprises a Hall switch element and a control element. The control element is electrically connected with the Hall switch element and used for receiving the magnetic flux fed back by the Hall switch element, outputting a first control signal to a peripheral circuit connected with the pressure switch system when the magnetic flux is within a first preset range so as to disconnect the peripheral circuit, and outputting a second control signal to the peripheral circuit when the magnetic flux is within a second preset range so as to disconnect the peripheral circuit. And outputting the second control signal to the peripheral circuit so as to conduct the peripheral circuit. Thus, the change of the magnetic flux is detected through the Hall switch element, the change of the pressure applied to the shell made of the high-molecular elastic material can be sensitively sensed, switch judgment is achieved through the control element in an auxiliary mode, and even under the condition of low pressure, accurate switch detection can still be achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of switch technology, and in particular to a pressure switch system based on polymer elastic materials and a control method thereof. Background Art

[0002] The characteristics of polymer elastic materials include high elasticity, flexibility, fatigue resistance, weather resistance and good chemical stability. These materials can be greatly deformed under external forces and quickly return to their original shape after the external forces are removed. Therefore, they are widely used in occasions that require durability, comfort and softness. Typical polymer elastic materials include silicone, natural rubber, fluororubber, polyurethane and ethylene propylene diene rubber.

[0003] Polymer elastic materials have significant elasticity and flexibility and are widely used in medical devices, robots, wearable devices and other fields. Their soft texture can improve comfort and safety. However, the elastic deformation of this material makes it difficult for traditional mechanical switches and touch sensors to reliably detect external pressure. In mechanical switches, the deformation of the elastic material is often not enough to trigger the switch, resulting in intermittent contact or failure to bounce normally; in touch sensor applications, the sensor encapsulated inside the polymer elastic material may misjudge the pressure or even continue to work, unable to accurately distinguish the real operation. Summary of the invention

[0004] The present invention provides a pressure switch system based on polymer elastic material and a control method thereof. By detecting the change of magnetic flux through a Hall switch element, the pressure change applied to the polymer elastic material shell can be sensitively sensed, and the switch judgment can be assisted by a control element. Even under low pressure conditions, accurate switch detection can be achieved.

[0005] In a first aspect, an embodiment of the present invention provides a pressure switch system based on a polymer elastic material, comprising:

[0006] The pressure switch system comprises a polymer elastic material housing and a pressure switch module encapsulated in the polymer elastic material housing;

[0007] The pressure switch module includes a Hall switch element and a control element;

[0008] The Hall switch element is arranged near the polymer elastic material shell, and is used to feedback the magnetic flux in the current state according to the force applied to the polymer elastic material shell;

[0009] The control element is electrically connected to the Hall switch element, and is used to receive the magnetic flux fed back by the Hall switch element, and when the magnetic flux is within a first preset range, output a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, and when the magnetic flux is within a second preset range, output a second control signal to the peripheral circuit to connect the peripheral circuit.

[0010] Optionally, the pressure switch module further includes a remote communication element;

[0011] The remote communication element is respectively connected to the control element and the host computer for receiving an initial calibration instruction sent by the host computer and sending the initial calibration instruction to the control element;

[0012] The control element is also used to calibrate the magnetic flux of the Hall switch element in the initial state to the first preset range and to calibrate the magnetic flux of the Hall switch element in the working state to the second preset range according to the initial calibration instruction when the pressure switch system is used for the first time.

[0013] Optionally, the remote communication element is further used to receive a recalibration instruction sent by the host computer, and send the recalibration instruction to the control element;

[0014] The control element is also used to obtain the magnetic flux of the Hall switch element in the initial state according to the recalibration instruction when a switch judgment error occurs in the pressure switch system, and to modify the first preset range accordingly, and to modify the second preset range according to the obtained magnetic flux of the Hall switch element in the working state.

[0015] Optionally, the remote communication element includes a Bluetooth unit, and the control element includes a single-chip microcomputer.

[0016] Optionally, the Hall switch element includes a magnetic component, a Hall sensor and a Hall switch;

[0017] The magnetic component is located above the Hall sensor and moves toward the Hall sensor according to the pressure applied to the polymer elastic material housing;

[0018] The Hall switch is connected to the magnetic component and the control element respectively, and is used to send the change of magnetic flux when the magnetic component approaches the Hall sensor to the control element.

[0019] Optionally, the pressure switch module further includes a power supply element;

[0020] The power supply element is electrically connected to the control element and is used to supply power to the pressure switch module.

[0021] Optionally, the power supply mode of the power supply element includes at least one of a wireless power supply mode, a wired power supply mode and a power supply mode of other devices.

[0022] In a second aspect, an embodiment of the present invention further provides a control method for a pressure switch system based on a polymer elastic material, which is applied to any of the pressure switch systems based on a polymer elastic material described in the first aspect, and the control method includes:

[0023] Acquiring the magnetic flux fed back by the Hall switch element;

[0024] When the magnetic flux is within a first preset range, outputting a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit;

[0025] When the magnetic flux is within a second preset range, a second control signal is output to the peripheral circuit to turn on the peripheral circuit.

[0026] Optionally, the pressure switch module further includes a remote communication element;

[0027] The remote communication element is respectively connected to the control element and the host computer for communication:

[0028] Before obtaining the magnetic flux fed back by the Hall switch element, the method further includes:

[0029] Obtaining an initial calibration instruction of the host computer;

[0030] When the pressure switch system is used for the first time, according to the initial calibration instruction, the magnetic flux of the Hall switch element in the initial state is calibrated to the first preset range, and the magnetic flux of the Hall switch element in the working state is calibrated to the second preset range.

[0031] Optionally, the pressure switch module further includes a remote communication element;

[0032] The remote communication element is respectively connected to the control element and the host computer for communication:

[0033] Before obtaining the magnetic flux fed back by the Hall switch element, the method further includes:

[0034] Obtaining a recalibration instruction from the host computer;

[0035] When a switch judgment error occurs in the pressure switch system, the magnetic flux of the Hall switch element in the initial state is obtained according to the recalibration instruction, and the first preset range is modified accordingly, and the second preset range is modified according to the obtained magnetic flux of the Hall switch element in the working state.

[0036] The embodiment of the present invention provides a pressure switch system based on polymer elastic material, which includes a polymer elastic material shell and a pressure switch module encapsulated in the polymer elastic material shell. The pressure switch module includes a Hall switch element and a control element. The Hall switch element is arranged at a position close to the polymer elastic material shell, and is used to feedback the magnetic flux in the current state according to the force applied to the polymer elastic material shell. The control element is electrically connected to the Hall switch element, and is used to receive the magnetic flux fed back by the Hall switch element, and when the magnetic flux is in a first preset range, output a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, and when the magnetic flux is in a second preset range, output a second control signal to the peripheral circuit to turn on the peripheral circuit. In this way, by detecting the change of magnetic flux through the Hall switch element, the pressure change applied to the polymer elastic material shell can be sensitively sensed, and the control element is used to assist in realizing the switch judgment, and even under low pressure conditions, accurate switch detection can still be achieved. The disadvantage that the mechanical switch cannot respond sensitively is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a pressure switch system provided by an embodiment of the present invention;

[0038] Figure 2 is a flow chart of a control method of a pressure switch system provided by an embodiment of the present invention;

[0039] Figure 3 It is a flow chart of another control method of a pressure switch system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] Figure 1 Schematic diagram of a pressure switch system provided by an embodiment of the present invention. Figure 1 The pressure switch system 100 includes a polymer elastic material housing 01 and a pressure switch module 02 encapsulated in the polymer elastic material housing. The pressure switch module 02 includes a Hall switch element 10 and a control element 20. The Hall switch element 10 is arranged near the polymer elastic material housing 01, and is used to feedback the magnetic flux in the current state according to the force applied to the polymer elastic material housing 01. The control element 20 is electrically connected to the Hall switch element 10, and is used to receive the magnetic flux fed back by the Hall switch element 10, and when the magnetic flux is in a first preset range, outputs a first control signal to a peripheral circuit 200 connected to the pressure switch system 100, so as to disconnect the peripheral circuit 200, and when the magnetic flux is in a second preset range, outputs a second control signal to the peripheral circuit 200, so as to turn on the peripheral circuit 200.

[0043] Exemplarily, the pressure switch system 100 of the embodiment of the present invention is applied to the field of polymer elastic materials, that is, the pressure switch system 100 in the present application includes a polymer elastic material housing 01. Specifically, polymer elastic materials are widely used in many modern industrial and consumer fields, such as medical equipment, consumer electronics, robots and industrial control systems. Such materials are widely used in application scenarios such as buttons, touch panels, and flexible packaging due to their excellent elasticity, flexibility, chemical corrosion resistance and durability. In the prior art, polymer elastic materials are usually combined with mechanical switches, that is, the mechanical switch is encapsulated in a polymer elastic material housing, but because the mechanical switch relies on physical pressing, that is, a large pressure is required to enable the mechanical switch to reach the threshold, and due to the deformation characteristics of the polymer elastic material, the externally applied force is difficult to effectively trigger the switch, especially in low-pressure operation scenarios, the reliability and response sensitivity of the mechanical switch are poor. In addition, if the applied pressure is too large, due to the characteristics of the polymer elastic material, the mechanical switch may be in a closed state for a long time, or even unable to be elastic, thereby further affecting the reliability and response sensitivity of the mechanical switch.

[0044] To this end, in the embodiment of the present invention, the traditional mechanical switch is replaced by an electrically controlled pressure switch module 02 to improve the sensitivity of the switch. Specifically, the pressure switch module 02 is encapsulated in a polymer elastic material housing 01, and includes a Hall switch element 10 and a control element 20. Among them, the Hall switch element 10 is used to detect changes in magnetic flux. Exemplarily, when pressure is applied to the polymer elastic material housing 01, the elastic deformation on the polymer elastic material housing 01 will be transmitted to the Hall switch element 10, and the Hall switch element 10 converts the change in elastic deformation into a change in magnetic flux and sends it to the control element 20. The control element 20 detects the change in magnetic flux fed back by the Hall switch element 10 in real time. When the magnetic flux fed back by the Hall switch element 10 is within a first preset range, a first control signal is output to the peripheral circuit 200 connected to the pressure switch system 100 to disconnect the peripheral circuit 200, that is, the pressure switch system 100 is in a disconnected state at this time, and the peripheral circuit 200 cannot work normally. When the magnetic flux fed back by the Hall switch element 10 is within the second preset range, a second control signal is output to the peripheral circuit 200 connected to the pressure switch system 100 to disconnect the peripheral circuit 200, that is, the pressure switch system 100 is in the on state at this time, and the peripheral circuit 200 can work normally. In this way, by detecting the change of magnetic flux through the Hall switch element 10, the pressure change applied to the polymer elastic material shell 01 can be sensitively sensed, and the change of magnetic flux can be monitored in real time through the control element 20, thereby assisting in the judgment of on and off. Even under low pressure conditions, accurate switch detection can still be achieved, which improves the reliability and response sensitivity of switch detection and solves the shortcomings of mechanical switches in the prior art that they cannot respond sensitively.

[0045] It should be noted that the embodiment of the present invention does not limit the values ​​in the first preset range and the second preset range, and those skilled in the art can set them as needed. In addition, in one embodiment, the values ​​in the first preset range are all smaller than the values ​​in the second preset range.

[0046] It should also be noted that the embodiment of the present invention does not limit the specific peripheral circuit 200, that is, in different application scenarios, the peripheral circuit 200 can be a circuit that implements different functions.

[0047] In summary, the pressure switch module in the embodiment of the present invention includes a Hall switch element and a control element. The Hall switch element is arranged near the polymer elastic material shell, and is used to feedback the magnetic flux in the current state according to the force applied to the polymer elastic material shell. The control element is electrically connected to the Hall switch element, and is used to receive the magnetic flux fed back by the Hall switch element, and when the magnetic flux is in a first preset range, outputs a first control signal to the peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, and when the magnetic flux is in a second preset range, outputs a second control signal to the peripheral circuit to turn on the peripheral circuit. In this way, by detecting the change of magnetic flux through the Hall switch element, the pressure change applied to the polymer elastic material shell can be sensitively sensed, and the control element is used to assist in realizing the switch judgment, so that accurate switch detection can be achieved even under low pressure conditions. The disadvantage that the mechanical switch cannot respond sensitively is solved.

[0048] Optionally, based on the above embodiment, continue to refer to Figure 1 The Hall switch element 10 includes a magnetic component 110, a Hall sensor 120 and a Hall switch 130. The magnetic component 110 is located above the Hall sensor 120 and moves toward the Hall sensor 120 according to the pressure applied to the polymer elastic material housing 01. The Hall switch 130 is connected to the magnetic component 110 and is used to send the change of magnetic field flux when the magnetic component 110 approaches the Hall sensor 130 to the control element 20.

[0049] Specifically, when pressure is applied to the polymer elastic material housing 01, the deformation of the polymer elastic material housing 01 is transmitted to the internal magnetic component 110, thereby causing the position of the magnetic component 110 to change, thereby causing the magnetic flux detected by the Hall switch element 10 to change. Figure 1In the illustrated embodiment, when no pressure is applied to the polymer elastic material housing 01, or the pressure applied to the polymer elastic material housing 01 is particularly small, the position change of the magnetic component 110 and the Hall sensor 120 is small, and they are in the S1 region (initial state). The position change of the magnetic component 110 and the Hall sensor 120 will cause the magnetic field to change. The magnetic component 110 is connected to the Hall switch 130 and the control element 20 respectively, and then the magnetic flux change of the magnetic field is sent to the control element 20 through the Hall switch 130. Since the position change of the magnetic component 110 and the Hall sensor 120 is small, the control element 20 determines that the magnetic flux is within the first preset range, and the control element 20 outputs a first control signal to the peripheral circuit 200, and the pressure switch system 100 is in the disconnected state. In other words, the change of the position of the magnetic component 110 in the S1 region is the change of the magnetic flux within the first preset range. Similarly, when the pressure applied to the polymer material housing 01 exceeds a certain threshold, the position of the magnetic component 110 is in the S2 region (working state), that is, at this time, the control element 20 determines that the magnetic flux is in the second preset range, and the control element 20 outputs a second control signal to the peripheral circuit 200, and the pressure switch system 100 is in the on state. In other words, the change in the position of the magnetic component 110 in the S2 region is the change in the magnetic flux within the second preset range. Then, the position change of the magnetic component 110 corresponds to the change in the magnetic flux, thereby achieving accurate switch detection.

[0050] It should be noted that an analog-to-digital converter (not shown in the figure) may also be included between the Hall switch 130 and the control element 20. The analog signal output by the Hall switch 130 is converted into a digital signal through the analog-to-digital converter and output to the control element 20, thereby ensuring that the control element 20 can perform data processing.

[0051] Optionally, in another embodiment, continue to refer to Figure 1 The pressure switch module 01 further includes a remote communication element 30. The remote communication element 30 is respectively connected to the control element 20 and the host computer 300 for communication, and is used to receive the initial calibration instruction sent by the host computer 300, and send the initial calibration instruction to the control element 20. The control element 20 is also used to calibrate the magnetic flux of the Hall switch element 10 in the initial state to a first preset range, and calibrate the magnetic flux of the Hall switch element 10 in the working state to a second preset range according to the initial calibration instruction when the pressure switch system 100 is used for the first time.

[0052] Specifically, when traditional switch elements are encapsulated in polymer elastic materials, the sensitivity of switch detection is affected by the encapsulation depth or material properties of the switch elements. For example, the working state of the mechanical switch cannot be automatically adjusted according to the encapsulation depth or deformation characteristics, resulting in inconsistent working performance at different encapsulation depths. It is impossible to effectively respond to changes in the packaging process and adaptively adjust the sensitivity of switch detection. Or like touch sensors (capacitive or resistive), the detection sensitivity is affected by the thickness of the polymer elastic material, the packaging process and the elastic properties of the material. A large thickness or improper packaging will significantly reduce the detection accuracy of the switch state, which is prone to misjudgment.

[0053] Furthermore, the pressure switch module 02 of the embodiment of the present invention further includes a remote communication element 30, which can be a Bluetooth unit. The remote communication element 30 is respectively connected to the control element 20 and the host computer 300. Among them, the host computer 300 is a part independent of the pressure switch system 100 in the present application, and is connected to the control element 20 through the remote communication element 30, so that the magnetic flux information obtained by the control element 20 can be displayed on the host computer 300, and a calibration instruction can be sent to the control element 20, so that the control element 20 calibrates the numerical value of the first preset range and the numerical value of the second preset range. Specifically, when the pressure switch system 100 is used for the first time, since the packaging depth of the pressure switch module 02 is uncertain, an initial calibration instruction can be sent through the host computer 300, and the initial calibration instruction is transmitted to the control element 20 through the remote communication element 30, wherein the control element 20 can be a single-chip microcomputer. After receiving the initial calibration instruction, the single-chip microcomputer begins to calibrate the numerical value of the first preset range and the data of the second preset range. Exemplarily, after receiving the initial calibration instruction, the single-chip microcomputer obtains the magnetic flux of the Hall switch element 10 in the initial state, wherein the initial state is that the polymer elastic material housing 01 is not subjected to pressure or is subjected to relatively small pressure (to prevent conduction when accidentally touched), and the magnetic flux change when the position of the magnetic component 110 changes at this time is calibrated as the first preset range, and when the magnetic flux is within the first preset range, the pressure switch module 02 is in the disconnected state. In addition, the magnetic flux of the Hall switch element 10 in the working state is also obtained. It can be understood that the working state is the pressure range when the user normally uses it, and the magnetic flux change when the position of the magnetic component 110 changes at this time is calibrated as the second preset range. When the magnetic flux is within the second preset range or exceeds the second preset range, the pressure switch module 02 is in the conducting state. It should be noted that the value within the first preset range is smaller than the value within the second preset range. In this way, the sensitivity changes under different packaging depths or different packaging materials can be adapted through the initial calibration instruction (that is, the appropriate first preset range and second preset range are calibrated according to different packaging depths or different packaging materials), ensuring that the switch state can still be stably and reliably judged in various complex packaging environments.

[0054] Optionally, based on the technology of the above embodiment, continue to refer to Figure 1 The remote communication component 30 is also used to receive a recalibration instruction sent by the host computer 300, and send the recalibration instruction to the control component 20. The control component 20 is also used to obtain the magnetic flux of the Hall switch element 10 in the initial state according to the recalibration instruction when a switch judgment error occurs in the pressure switch system 100, and modify the first preset range based on the obtained magnetic flux of the Hall switch element 10 in the working state, and modify the second preset range according to the obtained magnetic flux of the Hall switch element 10 in the working state.

[0055] Specifically, with the long-term use of the polymer elastic material shell 01, the polymer elastic material will gradually age, and its elastic properties will also change accordingly. Therefore, when the same force is applied to the polymer elastic material shell 01, the position of the magnetic component 110 will change before and after aging, that is, there is an error between the first preset range and the second preset range before and after aging. For example, before the material ages, a conventional force is applied to the polymer elastic material shell 01, and the change in pressure causes the magnetic component 110 to be located in the S2 area (working state), that is, the magnetic flux detected by the Hall switch element 10 is in the second preset range, and the pressure switch module 02 is in the on state. However, after aging, a conventional force is still applied to the polymer elastic material shell 01. Due to the decrease in elasticity, the magnetic component 110 will be located in the S1 area (initial state), that is, the magnetic flux detected by the Hall switch element 10 is in the first preset range, and the pressure switch module 02 is in the off state, resulting in a switch detection error.

[0056] To this end, the embodiment of the present invention also sends a recalibration instruction to the control element 20 through the upper computer 300 when a switch judgment error occurs in the pressure switch system 100 (for example, an error caused by material aging). When receiving the recalibration instruction, the control element 20 obtains the magnetic flux of the Hall switch element 10 in the initial state (the polymer elastic material shell 01 is not subjected to pressure or is subjected to relatively small pressure). Since the control element 20 obtains the magnetic flux of the Hall switch element 10 when a switch judgment error occurs, the magnetic flux in the initial state at this time is the magnetic flux change when the material ages, and then the data in the first preset range is modified according to the magnetic flux change so that the change in magnetic flux matches the elastic change of the material after aging. Similarly, when the control element 20 receives the recalibration instruction, it obtains the magnetic flux of the Hall switch element 10 in the current working state (the pressure range during normal user use). The magnetic flux in the working state is the magnetic flux change when the material ages. The data in the second preset range is then modified according to the magnetic flux change to adapt to the switch detection error caused by material aging, and can ensure the long-term stability and reliability of the pressure switch module 02 through periodic recalibration.

[0057] Optionally, based on the above embodiment, continue to refer to Figure 1 The pressure switch module 02 further includes a power supply element 40. The power supply element 40 is electrically connected to the control element 20 and is used to supply power to the pressure switch module 02. Specifically, since the pressure switch module 02 is encapsulated inside the polymer elastic material housing 01, in order to ensure the normal operation of the control element 20 in the pressure switch module 01, it is also necessary to set the power supply element 40 to be electrically connected to the control element 20 to supply power to the control element 20.

[0058] It is understandable that the embodiment of the present invention does not limit the power supply mode of the power supply element 40, and the power supply mode of the power supply element 40 may include at least one of a wireless power supply mode, a wired power supply mode, and other device power supply modes.

[0059] Based on the same inventive concept, an embodiment of the present invention further provides a control method for a pressure switch system based on a polymer elastic material. Figure 2 is a flow chart of a control method of a pressure switch system provided by an embodiment of the present invention, see Figure 2 , the control method comprises:

[0060] S110, obtaining the magnetic flux fed back by the Hall switch element.

[0061] Specifically, the pressure switch module is encapsulated in a polymer elastic material shell, including a Hall switch element and a control element. Among them, the Hall switch element is used to detect changes in magnetic flux. Exemplarily, when pressure is applied to the polymer elastic material shell, the elastic deformation of the polymer elastic material shell will be transmitted to the Hall switch element, and the Hall switch element converts the change in elastic deformation into a change in magnetic flux and sends it to the control element.

[0062] S120. When the magnetic flux is within a first preset range, output a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit.

[0063] The control element detects the change of magnetic flux fed back by the Hall switch element in real time, and when the magnetic flux fed back by the Hall switch element is within a first preset range, it outputs a first control signal to the peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, that is, the pressure switch system is in a disconnected state at this time, and the peripheral circuit cannot work normally.

[0064] S130. When the magnetic flux is within a second preset range, output a second control signal to the peripheral circuit to turn on the peripheral circuit.

[0065] When the magnetic flux fed back by the Hall switch element is within the second preset range, a second control signal is output to the peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, that is, the pressure switch system is in the on state at this time, and the peripheral circuit can work normally. In this way, by detecting the change of magnetic flux through the Hall switch element, the pressure change applied to the polymer elastic material shell can be sensitively sensed, and the change of magnetic flux can be monitored in real time through the control element, thereby assisting in the judgment of on and off. Even under low pressure conditions, accurate switch detection can still be achieved, which improves the reliability and response sensitivity of switch detection and solves the shortcomings of mechanical switches in the prior art that they cannot respond sensitively.

[0066] In summary, the embodiment of the present invention obtains the magnetic flux fed back by the Hall switch element, and when the magnetic flux is in a first preset range, outputs a first control signal to the peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, and when the magnetic flux is in a second preset range, outputs a second control signal to the peripheral circuit to turn on the peripheral circuit. In this way, by detecting the change in magnetic flux through the Hall switch element, the pressure change applied to the polymer elastic material shell can be sensitively sensed, and the control element can be used to assist in the switch judgment, so that accurate switch detection can be achieved even under low pressure conditions. The disadvantage that the mechanical switch cannot respond sensitively is solved.

[0067] Optional, Figure 3 FIG. 1 is a flow chart of another control method of a pressure switch system provided by an embodiment of the present invention. Figure 3 , the control method comprises:

[0068] S210. Obtain an initial calibration instruction from the host computer. When the pressure switch system is used for the first time, calibrate the magnetic flux of the Hall switch element in the initial state to a first preset range and calibrate the magnetic flux of the Hall switch element in the working state to a second preset range according to the initial calibration instruction.

[0069] Specifically, when the pressure switch system is used for the first time, since the packaging depth of the pressure switch module is uncertain, an initial calibration instruction can be sent through the host computer, and the initial calibration instruction is transmitted to the control element through the remote communication element, wherein the control element can be a single-chip microcomputer. After receiving the initial calibration instruction, the single-chip microcomputer starts to calibrate the values ​​of the first preset range and the data of the second preset range. Exemplarily, after receiving the initial calibration instruction, the single-chip microcomputer obtains the magnetic flux of the Hall switch element in the initial state, wherein the initial state is that the polymer elastic material shell is not subjected to pressure or is subjected to relatively small pressure (to prevent conduction when accidentally touched), and the magnetic flux change of the position change of the magnetic component at this time is calibrated as the first preset range, and when the magnetic flux is within the first preset range, the pressure switch module is in a disconnected state. In addition, the magnetic flux of the Hall switch element in the working state is also obtained. It can be understood that the working state is the pressure range when the user normally uses it, and the magnetic flux change of the position change of the magnetic component at this time is calibrated as the second preset range. When the magnetic flux is within the second preset range, or exceeds the second preset range, the pressure switch module is in a conducting state. It should be noted that the value within the first preset range is smaller than the value within the second preset range. In this way, the sensitivity changes under different packaging depths or different packaging materials can be adapted through the initial calibration instruction (i.e., the appropriate first preset range and second preset range are calibrated according to different packaging depths or different packaging materials), ensuring that the switch state can still be judged stably and reliably in various complex packaging environments.

[0070] S220. Obtain a recalibration instruction from the host computer. When a switch judgment error occurs in the pressure switch system, obtain the magnetic flux of the Hall switch element in the initial state according to the recalibration instruction, and modify the first preset range based on it, and modify the second preset range according to the obtained magnetic flux of the Hall switch element in the working state.

[0071] Specifically, when a switch judgment error occurs in the pressure switch system (for example, an error caused by material aging), the host computer sends a recalibration instruction to the control element. When the control element receives the recalibration instruction, it obtains the magnetic flux of the Hall switch element in the initial state (when the polymer elastic material shell is not under pressure or is under relatively small pressure). Since the control element obtains the magnetic flux of the Hall switch element when a switch judgment error occurs, the magnetic flux in the initial state is the change in magnetic flux when the material is aged, and then the data in the first preset range is modified according to the change in magnetic flux, so that the change in magnetic flux matches the elastic change after the material is aged. Similarly, when the control element receives the recalibration instruction, it obtains the magnetic flux of the Hall switch element in the working state (pressure range when the user is in normal use), and the magnetic flux in the working state is the change in magnetic flux when the material is aged, and then the data in the second preset range is modified according to the change in magnetic flux, so as to adapt to the switch detection error caused by material aging, and can ensure the long-term stability and reliability of the pressure switch module through periodic recalibration.

[0072] S230, obtaining the magnetic flux fed back by the Hall switch element.

[0073] Specifically, the Hall switch element may include a magnetic component, a Hall sensor and a Hall switch. When pressure is applied to the polymer elastic material shell, the deformation of the polymer elastic material shell is transmitted to the magnetic component inside, thereby causing the position of the magnetic component to change, thereby causing the magnetic flux detected by the Hall switch element to change.

[0074] S240. When the magnetic flux is within a first preset range, output a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit.

[0075] The control element detects the change of magnetic flux fed back by the Hall switch element in real time. When no pressure is applied to the polymer elastic material shell, or the pressure applied to the polymer elastic material shell is particularly small, the position change of the magnetic component and the Hall sensor is small and in the initial state. The position change of the magnetic component and the Hall sensor will cause the magnetic field to change. The magnetic component is connected to the Hall switch and the control element respectively, and then the magnetic flux change of the magnetic field is sent to the control element through the Hall switch. Since the position change of the magnetic component and the Hall sensor is small, the control element determines that the magnetic flux is within the first preset range, and the control element outputs the first control signal to the peripheral circuit, and the pressure switch system is in the disconnected state. In other words, the change of the position of the magnetic component in the initial state is the change of the magnetic flux within the first preset range.

[0076] S250: When the magnetic flux is within a second preset range, output a second control signal to the peripheral circuit to turn on the peripheral circuit.

[0077] When the pressure applied to the polymer material shell exceeds a certain threshold, the position of the magnetic component is in the working state, that is, the control element determines that the magnetic flux is within the second preset range, the control element outputs a second control signal to the peripheral circuit, and the pressure switch system is in the on state. In other words, the change in the position of the magnetic component in the working state is the change in the magnetic flux within the second preset range. Then, the change in the position of the magnetic component corresponds to the change in the magnetic flux, thereby achieving accurate switch detection.

[0078] In summary, the embodiment of the present invention obtains the initial calibration instruction of the host computer. When the pressure switch system is used for the first time, according to the initial calibration instruction, the magnetic flux of the Hall switch element in the initial state is calibrated to the first preset range, and the magnetic flux of the Hall switch element in the working state is calibrated to the second preset range. In this way, the sensitivity changes under different packaging depths or different packaging materials can be adapted through the initial calibration instruction (that is, the appropriate first preset range and second preset range are calibrated according to different packaging depths or different packaging materials), ensuring that the switch state can still be stably and reliably judged in various complex packaging environments. In addition, by obtaining the recalibration instruction of the host computer, when a switch judgment error occurs in the pressure switch system, according to the recalibration instruction, the magnetic flux of the Hall switch element in the initial state is obtained, and the first preset range is modified accordingly, and the second preset range is modified according to the magnetic flux of the Hall switch element in the working state obtained, so as to adapt to the switch detection error caused by material aging, and the long-term stability and reliability of the pressure switch module can be ensured through periodic recalibration.

[0079] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pressure switch system based on polymer elastic material, characterized in that: The pressure switch system comprises a polymer elastic material housing and a pressure switch module encapsulated in the polymer elastic material housing; The pressure switch module includes a Hall switch element and a control element; The Hall switch element is arranged near the polymer elastic material shell, and is used to feedback the magnetic flux in the current state according to the force applied to the polymer elastic material shell; The control element is electrically connected to the Hall switch element, and is used to receive the magnetic flux fed back by the Hall switch element, and when the magnetic flux is within a first preset range, output a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit, and when the magnetic flux is within a second preset range, output a second control signal to the peripheral circuit to connect the peripheral circuit.

2. The pressure switch system according to claim 1, characterized in that: The pressure switch module also includes a remote communication component; The remote communication element is respectively connected to the control element and the host computer for receiving an initial calibration instruction sent by the host computer and sending the initial calibration instruction to the control element; The control element is also used to calibrate the magnetic flux of the Hall switch element in the initial state to the first preset range and to calibrate the magnetic flux of the Hall switch element in the working state to the second preset range according to the initial calibration instruction when the pressure switch system is used for the first time.

3. The pressure switch system according to claim 2, characterized in that: The remote communication element is also used to receive a recalibration instruction sent by the host computer, and send the recalibration instruction to the control element; The control element is also used to obtain the magnetic flux of the Hall switch element in the initial state according to the recalibration instruction when a switch judgment error occurs in the pressure switch system, and to modify the first preset range accordingly, and to modify the second preset range according to the obtained magnetic flux of the Hall switch element in the working state.

4. The pressure switch system according to claim 3, characterized in that: The remote communication element includes a Bluetooth unit, and the control element includes a single chip microcomputer.

5. The pressure switch system according to claim 1, characterized in that: The Hall switch element includes a magnetic component, a Hall sensor and a Hall switch; The magnetic component is located above the Hall sensor and moves toward the Hall sensor according to the pressure applied to the polymer elastic material housing; The Hall switch is connected to the magnetic component and the control element respectively, and is used to send the change of magnetic flux when the magnetic component approaches the Hall sensor to the control element.

6. The pressure switch system according to claim 1, characterized in that: The pressure switch module also includes a power supply element; The power supply element is electrically connected to the control element and is used to supply power to the pressure switch module.

7. The pressure switch system according to claim 6, characterized in that: The power supply mode of the power supply element includes at least one of a wireless power supply mode, a wired power supply mode and a power supply mode of other devices.

8. A control method for a pressure switch system based on a polymer elastic material, applied to the pressure switch system according to any one of claims 1 to 7, characterized in that: The control method comprises: Acquiring the magnetic flux fed back by the Hall switch element; When the magnetic flux is within a first preset range, outputting a first control signal to a peripheral circuit connected to the pressure switch system to disconnect the peripheral circuit; When the magnetic flux is within a second preset range, a second control signal is output to the peripheral circuit to turn on the peripheral circuit.

9. The control method according to claim 8, characterized in that: The pressure switch module also includes a remote communication component; The remote communication element is respectively connected to the control element and the host computer for communication: Before obtaining the magnetic flux fed back by the Hall switch element, the method further includes: Obtaining an initial calibration instruction from the host computer; When the pressure switch system is used for the first time, according to the initial calibration instruction, the magnetic flux of the Hall switch element in the initial state is calibrated to the first preset range, and the magnetic flux of the Hall switch element in the working state is calibrated to the second preset range.

10. The control method according to claim 8, characterized in that: The pressure switch module also includes a remote communication component; The remote communication element is respectively connected to the control element and the host computer for communication: Before obtaining the magnetic flux fed back by the Hall switch element, the method further includes: Obtaining a recalibration instruction from the host computer; When a switch judgment error occurs in the pressure switch system, the magnetic flux of the Hall switch element in the initial state is obtained according to the recalibration instruction, and the first preset range is modified accordingly, and The second preset range is modified according to the acquired magnetic flux of the Hall switch element in the working state.

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